′�?, which has a frequency of 295 cm−one, is attributed to the stretching vibration of Ga–Se bonds. The 2-phonon absorption from the 295 cm−one phonon corresponds on the crystal IR absorption edge, as an alternative to the residual absorption peak. Density practical idea computations demonstrate the residual absorption in the https://baga4se7crystal96295.topbloghub.com/38978444/the-ultimate-guide-to-baga4se7-crystal